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nand: Remove __UBOOT__ ifdefs

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I didn't approve the patch that added them.  Get them out of the way
before doing a sync.

Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Scott Wood
2015-06-22 22:38:32 -05:00
parent c851a2458f
commit 273310644f
4 changed files with 4 additions and 462 deletions
Download Patch File Download Diff File Expand all files Collapse all files

397
drivers/mtd/nand/nand_base.c
View File

@@ -29,26 +29,6 @@
*
*/
#ifndef __UBOOT__
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/mtd/nand_bch.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
#include <linux/leds.h>
#include <linux/io.h>
#include <linux/mtd/partitions.h>
#else
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <common.h>
#include <malloc.h>
@@ -77,7 +57,6 @@
#endif
static bool is_module_text_address(unsigned long addr) {return 0;}
#endif
/* Define default oob placement schemes for large and small page devices */
static struct nand_ecclayout nand_oob_8 = {
@@ -165,17 +144,8 @@ static void nand_release_device(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;
#ifndef __UBOOT__
/* Release the controller and the chip */
spin_lock(&chip->controller->lock);
chip->controller->active = NULL;
chip->state = FL_READY;
wake_up(&chip->controller->wq);
spin_unlock(&chip->controller->lock);
#else
/* De-select the NAND device */
chip->select_chip(mtd, -1);
#endif
}
/**
@@ -184,11 +154,7 @@ static void nand_release_device(struct mtd_info *mtd)
*
* Default read function for 8bit buswidth
*/
#ifndef __UBOOT__
static uint8_t nand_read_byte(struct mtd_info *mtd)
#else
uint8_t nand_read_byte(struct mtd_info *mtd)
#endif
{
struct nand_chip *chip = mtd->priv;
return readb(chip->IO_ADDR_R);
@@ -288,7 +254,7 @@ static void nand_write_byte16(struct mtd_info *mtd, uint8_t byte)
chip->write_buf(mtd, (uint8_t *)&word, 2);
}
#if defined(__UBOOT__) && !defined(CONFIG_BLACKFIN)
#if !defined(CONFIG_BLACKFIN)
static void iowrite8_rep(void *addr, const uint8_t *buf, int len)
{
int i;
@@ -331,11 +297,7 @@ static void iowrite16_rep(void *addr, void *buf, int len)
*
* Default write function for 8bit buswidth.
*/
#ifndef __UBOOT__
static void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
#else
void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
#endif
{
struct nand_chip *chip = mtd->priv;
@@ -350,11 +312,7 @@ void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len)
*
* Default read function for 8bit buswidth.
*/
#ifndef __UBOOT__
static void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
#else
void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
#endif
{
struct nand_chip *chip = mtd->priv;
@@ -369,11 +327,7 @@ void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
*
* Default write function for 16bit buswidth.
*/
#ifndef __UBOOT__
static void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
#else
void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
#endif
{
struct nand_chip *chip = mtd->priv;
u16 *p = (u16 *) buf;
@@ -389,11 +343,7 @@ void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
*
* Default read function for 16bit buswidth.
*/
#ifndef __UBOOT__
static void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
#else
void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len)
#endif
{
struct nand_chip *chip = mtd->priv;
u16 *p = (u16 *) buf;
@@ -602,50 +552,10 @@ static int nand_block_checkbad(struct mtd_info *mtd, loff_t ofs, int getchip,
return nand_isbad_bbt(mtd, ofs, allowbbt);
}
#ifndef __UBOOT__
/**
* panic_nand_wait_ready - [GENERIC] Wait for the ready pin after commands.
* @mtd: MTD device structure
* @timeo: Timeout
*
* Helper function for nand_wait_ready used when needing to wait in interrupt
* context.
*/
static void panic_nand_wait_ready(struct mtd_info *mtd, unsigned long timeo)
{
struct nand_chip *chip = mtd->priv;
int i;
/* Wait for the device to get ready */
for (i = 0; i < timeo; i++) {
if (chip->dev_ready(mtd))
break;
touch_softlockup_watchdog();
mdelay(1);
}
}
#endif
/* Wait for the ready pin, after a command. The timeout is caught later. */
void nand_wait_ready(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;
#ifndef __UBOOT__
unsigned long timeo = jiffies + msecs_to_jiffies(20);
/* 400ms timeout */
if (in_interrupt() || oops_in_progress)
return panic_nand_wait_ready(mtd, 400);
led_trigger_event(nand_led_trigger, LED_FULL);
/* Wait until command is processed or timeout occurs */
do {
if (chip->dev_ready(mtd))
break;
touch_softlockup_watchdog();
} while (time_before(jiffies, timeo));
led_trigger_event(nand_led_trigger, LED_OFF);
#else
u32 timeo = (CONFIG_SYS_HZ * 20) / 1000;
u32 time_start;
@@ -656,7 +566,6 @@ void nand_wait_ready(struct mtd_info *mtd)
if (chip->dev_ready(mtd))
break;
}
#endif
}
EXPORT_SYMBOL_GPL(nand_wait_ready);
@@ -903,39 +812,8 @@ static int
nand_get_device(struct mtd_info *mtd, int new_state)
{
struct nand_chip *chip = mtd->priv;
#ifndef __UBOOT__
spinlock_t *lock = &chip->controller->lock;
wait_queue_head_t *wq = &chip->controller->wq;
DECLARE_WAITQUEUE(wait, current);
retry:
spin_lock(lock);
/* Hardware controller shared among independent devices */
if (!chip->controller->active)
chip->controller->active = chip;
if (chip->controller->active == chip && chip->state == FL_READY) {
chip->state = new_state;
spin_unlock(lock);
return 0;
}
if (new_state == FL_PM_SUSPENDED) {
if (chip->controller->active->state == FL_PM_SUSPENDED) {
chip->state = FL_PM_SUSPENDED;
spin_unlock(lock);
return 0;
}
}
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(wq, &wait);
spin_unlock(lock);
schedule();
remove_wait_queue(wq, &wait);
goto retry;
#else
chip->state = new_state;
return 0;
#endif
}
/**
@@ -989,23 +867,6 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
#ifndef __UBOOT__
if (in_interrupt() || oops_in_progress)
panic_nand_wait(mtd, chip, timeo);
else {
timeo = jiffies + msecs_to_jiffies(timeo);
while (time_before(jiffies, timeo)) {
if (chip->dev_ready) {
if (chip->dev_ready(mtd))
break;
} else {
if (chip->read_byte(mtd) & NAND_STATUS_READY)
break;
}
cond_resched();
}
}
#else
u32 timer = (CONFIG_SYS_HZ * timeo) / 1000;
u32 time_start;
@@ -1019,7 +880,6 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
break;
}
}
#endif
led_trigger_event(nand_led_trigger, LED_OFF);
status = (int)chip->read_byte(mtd);
@@ -1028,162 +888,6 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
return status;
}
#ifndef __UBOOT__
/**
* __nand_unlock - [REPLACEABLE] unlocks specified locked blocks
* @mtd: mtd info
* @ofs: offset to start unlock from
* @len: length to unlock
* @invert: when = 0, unlock the range of blocks within the lower and
* upper boundary address
* when = 1, unlock the range of blocks outside the boundaries
* of the lower and upper boundary address
*
* Returs unlock status.
*/
static int __nand_unlock(struct mtd_info *mtd, loff_t ofs,
uint64_t len, int invert)
{
int ret = 0;
int status, page;
struct nand_chip *chip = mtd->priv;
/* Submit address of first page to unlock */
page = ofs >> chip->page_shift;
chip->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & chip->pagemask);
/* Submit address of last page to unlock */
page = (ofs + len) >> chip->page_shift;
chip->cmdfunc(mtd, NAND_CMD_UNLOCK2, -1,
(page | invert) & chip->pagemask);
/* Call wait ready function */
status = chip->waitfunc(mtd, chip);
/* See if device thinks it succeeded */
if (status & NAND_STATUS_FAIL) {
pr_debug("%s: error status = 0x%08x\n",
__func__, status);
ret = -EIO;
}
return ret;
}
/**
* nand_unlock - [REPLACEABLE] unlocks specified locked blocks
* @mtd: mtd info
* @ofs: offset to start unlock from
* @len: length to unlock
*
* Returns unlock status.
*/
int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
int ret = 0;
int chipnr;
struct nand_chip *chip = mtd->priv;
pr_debug("%s: start = 0x%012llx, len = %llu\n",
__func__, (unsigned long long)ofs, len);
if (check_offs_len(mtd, ofs, len))
ret = -EINVAL;
/* Align to last block address if size addresses end of the device */
if (ofs + len == mtd->size)
len -= mtd->erasesize;
nand_get_device(mtd, FL_UNLOCKING);
/* Shift to get chip number */
chipnr = ofs >> chip->chip_shift;
chip->select_chip(mtd, chipnr);
/* Check, if it is write protected */
if (nand_check_wp(mtd)) {
pr_debug("%s: device is write protected!\n",
__func__);
ret = -EIO;
goto out;
}
ret = __nand_unlock(mtd, ofs, len, 0);
out:
chip->select_chip(mtd, -1);
nand_release_device(mtd);
return ret;
}
EXPORT_SYMBOL(nand_unlock);
/**
* nand_lock - [REPLACEABLE] locks all blocks present in the device
* @mtd: mtd info
* @ofs: offset to start unlock from
* @len: length to unlock
*
* This feature is not supported in many NAND parts. 'Micron' NAND parts do
* have this feature, but it allows only to lock all blocks, not for specified
* range for block. Implementing 'lock' feature by making use of 'unlock', for
* now.
*
* Returns lock status.
*/
int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
int ret = 0;
int chipnr, status, page;
struct nand_chip *chip = mtd->priv;
pr_debug("%s: start = 0x%012llx, len = %llu\n",
__func__, (unsigned long long)ofs, len);
if (check_offs_len(mtd, ofs, len))
ret = -EINVAL;
nand_get_device(mtd, FL_LOCKING);
/* Shift to get chip number */
chipnr = ofs >> chip->chip_shift;
chip->select_chip(mtd, chipnr);
/* Check, if it is write protected */
if (nand_check_wp(mtd)) {
pr_debug("%s: device is write protected!\n",
__func__);
status = MTD_ERASE_FAILED;
ret = -EIO;
goto out;
}
/* Submit address of first page to lock */
page = ofs >> chip->page_shift;
chip->cmdfunc(mtd, NAND_CMD_LOCK, -1, page & chip->pagemask);
/* Call wait ready function */
status = chip->waitfunc(mtd, chip);
/* See if device thinks it succeeded */
if (status & NAND_STATUS_FAIL) {
pr_debug("%s: error status = 0x%08x\n",
__func__, status);
ret = -EIO;
goto out;
}
ret = __nand_unlock(mtd, ofs, len, 0x1);
out:
chip->select_chip(mtd, -1);
nand_release_device(mtd);
return ret;
}
EXPORT_SYMBOL(nand_lock);
#endif
/**
* nand_read_page_raw - [INTERN] read raw page data without ecc
* @mtd: mtd info structure
@@ -2479,13 +2183,8 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to,
if (!writelen)
return 0;
#ifndef __UBOOT__
/* Reject writes, which are not page aligned */
if (NOTALIGNED(to) || NOTALIGNED(ops->len)) {
#else
/* Reject writes, which are not page aligned */
if (NOTALIGNED(to)) {
#endif
pr_notice("%s: attempt to write non page aligned data\n",
__func__);
return -EINVAL;
@@ -3013,31 +2712,6 @@ static int nand_onfi_get_features(struct mtd_info *mtd, struct nand_chip *chip,
return 0;
}
#ifndef __UBOOT__
/**
* nand_suspend - [MTD Interface] Suspend the NAND flash
* @mtd: MTD device structure
*/
static int nand_suspend(struct mtd_info *mtd)
{
return nand_get_device(mtd, FL_PM_SUSPENDED);
}
/**
* nand_resume - [MTD Interface] Resume the NAND flash
* @mtd: MTD device structure
*/
static void nand_resume(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;
if (chip->state == FL_PM_SUSPENDED)
nand_release_device(mtd);
else
pr_err("%s called for a chip which is not in suspended state\n",
__func__);
}
#endif
/* Set default functions */
static void nand_set_defaults(struct nand_chip *chip, int busw)
@@ -3090,11 +2764,7 @@ static void nand_set_defaults(struct nand_chip *chip, int busw)
}
/* Sanitize ONFI strings so we can safely print them */
#ifndef __UBOOT__
static void sanitize_string(uint8_t *s, size_t len)
#else
static void sanitize_string(char *s, size_t len)
#endif
{
ssize_t i;
@@ -3160,11 +2830,7 @@ static int nand_flash_detect_ext_param_page(struct mtd_info *mtd,
* Check the signature.
* Do not strictly follow the ONFI spec, maybe changed in future.
*/
#ifndef __UBOOT__
if (strncmp(ep->sig, "EPPS", 4)) {
#else
if (strncmp((char *)ep->sig, "EPPS", 4)) {
#endif
pr_debug("The signature is invalid.\n");
goto ext_out;
}
@@ -3695,11 +3361,7 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type)
static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip,
struct nand_flash_dev *type, u8 *id_data, int *busw)
{
#ifndef __UBOOT__
if (!strncmp(type->id, id_data, type->id_len)) {
#else
if (!strncmp((char *)type->id, (char *)id_data, type->id_len)) {
#endif
mtd->writesize = type->pagesize;
mtd->erasesize = type->erasesize;
mtd->oobsize = type->oobsize;
@@ -3980,18 +3642,7 @@ int nand_scan_tail(struct mtd_info *mtd)
!(chip->bbt_options & NAND_BBT_USE_FLASH));
if (!(chip->options & NAND_OWN_BUFFERS)) {
#ifndef __UBOOT__
nbuf = kzalloc(sizeof(*nbuf) + mtd->writesize
+ mtd->oobsize * 3, GFP_KERNEL);
if (!nbuf)
return -ENOMEM;
nbuf->ecccalc = (uint8_t *)(nbuf + 1);
nbuf->ecccode = nbuf->ecccalc + mtd->oobsize;
nbuf->databuf = nbuf->ecccode + mtd->oobsize;
#else
nbuf = kzalloc(sizeof(struct nand_buffers), GFP_KERNEL);
#endif
chip->buffers = nbuf;
} else {
if (!chip->buffers)
@@ -4224,10 +3875,6 @@ int nand_scan_tail(struct mtd_info *mtd)
mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM :
MTD_CAP_NANDFLASH;
mtd->_erase = nand_erase;
#ifndef __UBOOT__
mtd->_point = NULL;
mtd->_unpoint = NULL;
#endif
mtd->_read = nand_read;
mtd->_write = nand_write;
mtd->_panic_write = panic_nand_write;
@@ -4236,10 +3883,6 @@ int nand_scan_tail(struct mtd_info *mtd)
mtd->_sync = nand_sync;
mtd->_lock = NULL;
mtd->_unlock = NULL;
#ifndef __UBOOT__
mtd->_suspend = nand_suspend;
mtd->_resume = nand_resume;
#endif
mtd->_block_isbad = nand_block_isbad;
mtd->_block_markbad = nand_block_markbad;
mtd->writebufsize = mtd->writesize;
@@ -4299,44 +3942,6 @@ int nand_scan(struct mtd_info *mtd, int maxchips)
}
EXPORT_SYMBOL(nand_scan);
#ifndef __UBOOT__
/**
* nand_release - [NAND Interface] Free resources held by the NAND device
* @mtd: MTD device structure
*/
void nand_release(struct mtd_info *mtd)
{
struct nand_chip *chip = mtd->priv;
if (chip->ecc.mode == NAND_ECC_SOFT_BCH)
nand_bch_free((struct nand_bch_control *)chip->ecc.priv);
mtd_device_unregister(mtd);
/* Free bad block table memory */
kfree(chip->bbt);
if (!(chip->options & NAND_OWN_BUFFERS))
kfree(chip->buffers);
/* Free bad block descriptor memory */
if (chip->badblock_pattern && chip->badblock_pattern->options
& NAND_BBT_DYNAMICSTRUCT)
kfree(chip->badblock_pattern);
}
EXPORT_SYMBOL_GPL(nand_release);
static int __init nand_base_init(void)
{
led_trigger_register_simple("nand-disk", &nand_led_trigger);
return 0;
}
static void __exit nand_base_exit(void)
{
led_trigger_unregister_simple(nand_led_trigger);
}
#endif
module_init(nand_base_init);
module_exit(nand_base_exit);

30
drivers/mtd/nand/nand_bbt.c
View File

@@ -59,30 +59,15 @@
*
*/
#ifndef __UBOOT__
#include <linux/slab.h>
#include <linux/types.h>
#include <common.h>
#include <malloc.h>
#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/bbm.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/vmalloc.h>
#include <linux/export.h>
#include <linux/string.h>
#else
#include <common.h>
#include <malloc.h>
#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/bbm.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/bitops.h>
#include <linux/string.h>
#endif
#define BBT_BLOCK_GOOD 0x00
#define BBT_BLOCK_WORN 0x01
@@ -541,11 +526,7 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
{
struct nand_chip *this = mtd->priv;
int i, chips;
#ifndef __UBOOT__
int bits, startblock, block, dir;
#else
int startblock, block, dir;
#endif
int scanlen = mtd->writesize + mtd->oobsize;
int bbtblocks;
int blocktopage = this->bbt_erase_shift - this->page_shift;
@@ -569,11 +550,6 @@ static int search_bbt(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr
bbtblocks = mtd->size >> this->bbt_erase_shift;
}
#ifndef __UBOOT__
/* Number of bits for each erase block in the bbt */
bits = td->options & NAND_BBT_NRBITS_MSK;
#endif
for (i = 0; i < chips; i++) {
/* Reset version information */
td->version[i] = 0;

5
drivers/mtd/nand/nand_ids.c
View File

@@ -8,13 +8,8 @@
* published by the Free Software Foundation.
*
*/
#ifndef __UBOOT__
#include <linux/module.h>
#include <linux/mtd/nand.h>
#else
#include <common.h>
#include <linux/mtd/nand.h>
#endif
#include <linux/sizes.h>
#define LP_OPTIONS NAND_SAMSUNG_LP_OPTIONS

34
include/linux/mtd/nand.h
View File

@@ -16,20 +16,12 @@
#ifndef __LINUX_MTD_NAND_H
#define __LINUX_MTD_NAND_H
#ifndef __UBOOT__
#include <linux/wait.h>
#include <linux/spinlock.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/flashchip.h>
#include <linux/mtd/bbm.h>
#else
#include "config.h"
#include "linux/compat.h"
#include "linux/mtd/mtd.h"
#include "linux/mtd/flashchip.h"
#include "linux/mtd/bbm.h"
#endif
struct mtd_info;
struct nand_flash_dev;
@@ -49,16 +41,6 @@ extern void nand_release(struct mtd_info *mtd);
/* Internal helper for board drivers which need to override command function */
extern void nand_wait_ready(struct mtd_info *mtd);
#ifndef __UBOOT__
/* locks all blocks present in the device */
extern int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
/* unlocks specified locked blocks */
extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
/* The maximum number of NAND chips in an array */
#define NAND_MAX_CHIPS 8
#else
/*
* This constant declares the max. oobsize / page, which
* is supported now. If you add a chip with bigger oobsize/page
@@ -66,7 +48,6 @@ extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
*/
#define NAND_MAX_OOBSIZE 744
#define NAND_MAX_PAGESIZE 8192
#endif
/*
* Constants for hardware specific CLE/ALE/NCE function
@@ -473,9 +454,6 @@ struct nand_jedec_params {
struct nand_hw_control {
spinlock_t lock;
struct nand_chip *active;
#ifndef __UBOOT__
wait_queue_head_t wq;
#endif
};
/**
@@ -557,16 +535,10 @@ struct nand_ecc_ctrl {
* consecutive order.
*/
struct nand_buffers {
#ifndef __UBOOT__
uint8_t *ecccalc;
uint8_t *ecccode;
uint8_t *databuf;
#else
uint8_t ecccalc[ALIGN(NAND_MAX_OOBSIZE, ARCH_DMA_MINALIGN)];
uint8_t ecccode[ALIGN(NAND_MAX_OOBSIZE, ARCH_DMA_MINALIGN)];
uint8_t databuf[ALIGN(NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE,
ARCH_DMA_MINALIGN)];
#endif
};
/**
@@ -734,9 +706,7 @@ struct nand_chip {
uint8_t *oob_poi;
struct nand_hw_control *controller;
#ifdef __UBOOT__
struct nand_ecclayout *ecclayout;
#endif
struct nand_ecc_ctrl ecc;
struct nand_buffers *buffers;
@@ -866,13 +836,11 @@ extern int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, uint8_t *buf);
#ifdef __UBOOT__
/*
* Constants for oob configuration
*/
#define NAND_SMALL_BADBLOCK_POS 5
#define NAND_LARGE_BADBLOCK_POS 0
#endif
/**
* struct platform_nand_chip - chip level device structure
@@ -1008,12 +976,10 @@ static inline int jedec_feature(struct nand_chip *chip)
: 0;
}
#ifdef __UBOOT__
/* Standard NAND functions from nand_base.c */
void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len);
void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len);
void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len);
void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len);
uint8_t nand_read_byte(struct mtd_info *mtd);
#endif
#endif /* __LINUX_MTD_NAND_H */